What is monolithic refractory lining?
  • Time:Jul 17, 2023
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Monolithic refractory lining refers to a type of refractory material that is applied as a single, continuous layer to form the internal surface of a furnace, kiln, or other high-temperature industrial equipment. Unlike traditional refractory bricks or tiles, which are individual units, monolithic refractories are composed of granular or powdered refractory materials combined with binders and additives. They are mixed with water or other liquid binders to form a workable paste or slurry that can be easily applied and shaped.

Once applied, the monolithic refractory material undergoes a curing process, during which it hardens and sets in place. This bonding process may involve chemical reactions or physical transformations, such as hydration, sintering, or drying, depending on the specific composition of the refractory material. The cured monolithic lining creates a seamless and cohesive structure that provides thermal insulation, erosion resistance, and structural integrity in high-temperature environments.

Monolithic refractories offer several advantages over traditional brick or tile linings. They can be installed rapidly, conform to complex shapes, and eliminate the need for joints or gaps between individual units, reducing the risk of thermal stress and heat loss. Monolithic linings also tend to have better thermal shock resistance and can be more cost-effective due to simplified installation processes and reduced maintenance requirements.


Various types of monolithic refractories are available, including castables, gunning mixes, ramming mixes, plastics, and mortars. The selection of a specific monolithic refractory depends on factors such as the operating temperature, chemical environment, mechanical stress, and application method.

Overall, monolithic refractory linings offer flexibility, efficiency, and superior performance in demanding high-temperature applications across industries such as iron and steel, cement, glass, petrochemicals, and incineration.

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low density

good corrosion resistance

Refractoriness under load high

High temperature strength

high strength

low abrasion

Medium temperature high strength

Excellent thermal shock resistance

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